Question though, have a '04 754li, and the stealership swears there is not a software update for the 745li's only the 750's.

A claim was made with PUMA (I think that's it), which the dealership said was a division of BMW, concerning drivability issues (going into 5th gear issues, sometimes starting in 2nd gear, etc) generally all the things that are supposed to be addressed with the "urban" updated software. They said tranny was bad, needed replaced for $9k, on a 41k mile car.

It seems the modern day dealership is a parts swap-er, and will not service and repair.